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Soluble phosphorus removal through adsorption on spent alum sludge

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dc.contributor.author Georgantas, DA en
dc.contributor.author Matsis, VM en
dc.contributor.author Grigoropoulou, HP en
dc.date.accessioned 2014-03-01T01:25:10Z
dc.date.available 2014-03-01T01:25:10Z
dc.date.issued 2006 en
dc.identifier.issn 0959-3330 en
dc.identifier.uri http://hdl.handle.net/123456789/17576
dc.subject Elovich en
dc.subject Lagergren en
dc.subject Low cost adsorbent en
dc.subject Orthophosphate en
dc.subject Pseudo-second-order kinetics en
dc.subject.classification Environmental Sciences en
dc.subject.other aluminum potassium sulfate en
dc.subject.other phosphate en
dc.subject.other phosphorus en
dc.subject.other Adsorption en
dc.subject.other Chemicals removal (water treatment) en
dc.subject.other Chemisorption en
dc.subject.other pH en
dc.subject.other Phosphorus en
dc.subject.other Reaction kinetics en
dc.subject.other Sewage sludge en
dc.subject.other Wastewater treatment en
dc.subject.other X ray diffraction analysis en
dc.subject.other adsorption en
dc.subject.other orthophosphate en
dc.subject.other phosphorus en
dc.subject.other pollutant removal en
dc.subject.other sludge en
dc.subject.other wastewater en
dc.subject.other adsorption kinetics en
dc.subject.other article en
dc.subject.other controlled study en
dc.subject.other pH en
dc.subject.other precipitation en
dc.subject.other sludge treatment en
dc.subject.other waste component removal en
dc.subject.other waste water management en
dc.subject.other X ray diffraction en
dc.subject.other Adsorption en
dc.subject.other Alum Compounds en
dc.subject.other Hydrogen-Ion Concentration en
dc.subject.other Kinetics en
dc.subject.other Phosphates en
dc.subject.other Phosphorus en
dc.subject.other Sewage en
dc.subject.other Solubility en
dc.subject.other Waste Disposal, Fluid en
dc.subject.other Water Purification en
dc.title Soluble phosphorus removal through adsorption on spent alum sludge en
heal.type journalArticle en
heal.identifier.primary 10.1080/09593332708618726 en
heal.identifier.secondary http://dx.doi.org/10.1080/09593332708618726 en
heal.language English en
heal.publicationDate 2006 en
heal.abstract In the present study freshly precipitated spent alum sludge [15-75 mg Al l(-1)] and alum [3-15 mg Al l(-1)] were tested and compared for their efficiency to remove phosphorus in synthetic wastewater [10mg P l(-1), 25 degrees C, pH=6] and it was proven that pure alum is much more efficient at phosphorus removal than the spent alum sludge. The effect of the pH on phosphorus removal efficiency was studied and it was proven that maximum orthophosphate removal is achieved in pH values 5-6 in both cases, alum and spent alum sludge, although alum is efficient in a wider pH range (4-7). The effect of aging [up to two months at 25 degrees C] on the efficiency of the spent sludge to remove phosphorus in synthetic wastewater was studied and it was proven that this efficiency is decreased through aging (up to 20% for 2 months aging). X-ray diffraction was used in order to examine whether this decrease is caused by changes in the structure of adsorbent and a mechanism was proposed to explain the above changes. Kinetics was investigated in the case of fresh and aged spent alum sludge and the pseudo-second-order chemisorption rate equation fits satisfactorily the experimental data [k: 0.286-1.048 g mmol(-1) min(-1), at 23-26 degrees C]. Finally, equilibrium was studied for fresh and aged spent alum sludge and the Freundlich isotherm fitted best the experimental data suggesting heterogeneous sorption [K-F=14.4-19.7, N: 0.13-0.20]. en
heal.publisher SELPER LTD, PUBLICATIONS DIV en
heal.journalName Environmental Technology en
dc.identifier.doi 10.1080/09593332708618726 en
dc.identifier.isi ISI:000242447900003 en
dc.identifier.volume 27 en
dc.identifier.issue 10 en
dc.identifier.spage 1081 en
dc.identifier.epage 1088 en


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